Ventilating-cap for sewer-pipes



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H. BRADLEY, Jr. 8B J. V. ADAMS. VBNTILATING GAP FOR SEWER PIPES.

No. 499,904. Pat gnted June 20, 1893.

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HARRY BRADLEY, JR., AND JOHN V. ADAMS, OF BUFFALO, NEW YORK.

V'ENTlLATING-CAP FOR SEWER-Pl PES.

SPECIFICATION forming partof Letters Patent No. 499,904, dated June 20,1893.

' Application filed January 10, 1898.

T0 aZZ whom it may concern.-

Be it known that we, HARRY BRADLEY, J r., and JOHN V. ADAMS, citizens ofthe United States, residing at Bufialo, in the county of Erie and Stateof New York, have invented a new and useful Ventilating-Cap for Sewer-Pipes, of which the following is a specification.

V This invention relates to sewer caps; and it has for its object toprovide an improved device of this character which can be readilyattached to the end of the ordinary sizes of -sewer ventilating pipes.

To this end the primary object of the invention is to provideanimproveddetachable pipe cap, which can not only be quickly and easilysecured in position on the end of a sewer ventilating, or otherventilating pipe, but also which, when in position, provides for a freecirculation of airinto the pipe without allowing obstructions to falltherein. The cap being an integral piece of metal avoids the necessityof calking joints, &c., where the caps are sectional, such sectionalcaps being usually employed.

With these and other objects-in view which will readily appear as thenature of the invention is better understood, the same consists in thenovel construction, combination and arrangement of parts, hereinaftermore fully described, illustrated and claimed.

In the accompanying drawings:-Figure l is an elevation of the upper endof a sewer ventilating pipe and aventilating cap attached thereto. Fig.2 is a central vertical sectional view of the construction disclosed inFig. 1. Fig. 3 is an interior or bottom perspective view of the cap.

Referring to the accompanying drawings, A represents the upper end of aventilating pipe for sewers, &c., which is inclosed by the removablesemi-spherical ventilating cap B. The removable semi-sphericalventilating cap B, is a single hollow casting adapted to inclose theopen end of the pipe section, and is provided with a series of interiorlugs C, which terminate at their lower inner edges in the shoulders D,which are adapted to rest on the end of the pipe section A. Thesupporting shoulders D, at the lower inner edges are arranged nearlyflush with the edge of the cap, so as to hold the same off from andabove the end of the pipe, and the outer wall of said shoulders D, isformed by the depending securing ears E, which are de- Serial No.457,942. (No model.)

signed to embrace the pipe on which the cap is secured. The said ears E,project sufficiently far from the outer shouldered edges of the interiorlugs so as to secure a good purchase over the end of the pipe. One ofthe shoulders D, is wider than the other shoulders, so as to dispose theadjacent ear nearer to the edge of the cap, so that some adjustment maybe had for slightly varying diameters of pipe, and said car near thewider shoulder is provided with a threaded perforation F, which receivesthe clamping set screw G, adapted to impinge on one side of the pipesection A, and securely bind or clamp the cap in position thereon.

As clearly illustrated in the drawings, the base of the semi-sphericalcap is of greater diameter than the pipe end on which it is secured andtherefore the ventilating spaces H, are formed between the ears, so asto allow for a free circulation of airinto the pipe.

Ohangesin the form, proportion and the minor details of construction maybe resorted to without departing from the principle or sacrificing anyof the advantages of this invention.

Having thus described ourinvention, what we claim, and desire to secureby Letters Patent, is

A hollow semi-spherical ventilating cap having a series of interiorsupporting lugs terminating at their lower inner edges in shouldersnearly flush with the edge of the cap and adapted to rest on the end ofa pipe, one of said shoulders being wider than the other shoulders topermit an adjustment for diiferent sized pipes, and an integral seriesof depending securing ears projected beyond said shoulders between thesame and the edge of the cap to embrace the outside of the pipe, the earextended from the wider ad'- justment shoulder being provided with athreaded perforation, and a clamping set screw engaging said threadedperforation and adapted to impinge on one side of the pipe,

substantially as set forth.

In testimony that we claim the foregoing as our own we have heretoaifixed our signatures in the presence of two witnesses.

HARRY BRADLEY, JR. JOHN V. ADAMS.

Witnesses:

HENRY H. BENTE, HENRY STEINMAN.

